B_c meson production in γγcollisions and charm content of the photon

Abstract

Based on photon structure function formalism we have calculated $B_c(B_c^{\ast })$ meson production cross section in $\gamma \gamma$ collisions via partonic subprocess $c\gamma \to B_c(B_c^{\ast })b$. It was shown that this approach gives the same results for $B_c^{\ast }(B_c)$ meson cross sections as the direct leading order QCD calculation of the subprocess $\gamma \gamma \to B_c(B_c^{\ast })b\bar{c}$ at small energy. Howere, opposite to the direct QCD calculation we have obtained the increase of the $B_c(B_c^{\ast })$ meson cross section at large energies. We have found also additional contribution to the $B_c$ meson production via the nonperturbative fluctuations $\gamma \leftrightarrow J/\psi$.

LaTeX, 7 pages and 6 figures available upon request

References in corpus (5)

• Low- and high-mass components of the photon distribution functions
• Complete Next to Leading Order QCD Corrections to the Photon Structure Functions $F_2^{\gamma }(x,Q^2)$ and $F_L^{\gamma }(x,Q^2)$
• Photonic production of B_c-mesons
• Intrinsic Charm In Proton and $J/\psi$ Photoproduction at High Energies
• Intrinsic Charm Contribution to $J/\psi$ Plus Open Charm Associated Production at High Energies

Cited by in corpus (1)

• Production of B(c) mesons via fragmentation in the kT-factorization approach